Engineering - March 2007

2007-03-25 17:39:38 · 2 answers · asked by natalie k 1

2007-03-25 17:30:44 · 1 answers · asked by KARTHICK 1

PCBs don't give much info and am trying to find out what components make up a basic calculator which does only the basic functions (+, -, /, *). Any links to resources will be of great help as well!

2007-03-25 16:35:13 · 1 answers · asked by l!lo:) 1

http://img87.imageshack.us/img87/7518/gtpahcis23wr5.jpg

Hey could someone help me out with these graphical representations. I missed one of the classes and im finding it really difficult. thanks

2007-03-25 15:41:01 · 1 answers · asked by Chris B 1

2007-03-25 14:54:22 · 2 answers · asked by DIMPLE 1

Or is it just an urban myth? Can anybody provide a source?

2007-03-25 14:53:09 · 2 answers · asked by Anonymous

If i desire i specific shape would i have to order from the refinery, or could i just melt it down and reshape?

2007-03-25 14:50:10 · 1 answers · asked by Luke H 1

Please i need your help! Can you give me an example of a compound machine containing a screw and one containing a pulley? They can not be a bike, stapler, drill, wheelbarrow, or can opener.

2007-03-25 14:48:56 · 4 answers · asked by ♥ 3

Q=Q0(1-e to the square root -t/pie) and Q=Qo e to the square root -t/pie for charging and discharging? In an RC circuit

2007-03-25 14:23:50 · 1 answers · asked by ... 3

A line laid off with a 100ft. tape known to be 0.02ft. too long. If the distance requires length of 300ft., a distance of_________ft. should be measured out.

299.94
299.98
300.
300.02
300.04

2007-03-25 14:01:50 · 2 answers · asked by pieceomind4me 3

I am creating a project where I must pump water to a helmet. If you have any ideas, thoughts, solutions, diagrams, etc. please? thanks

2007-03-25 13:58:33 · 1 answers · asked by Brendan 2

What are the rules for combining resistors in series circuits?

2007-03-25 13:41:06 · 9 answers · asked by angelgirl 2

hello, could you recommend an opto coupler to drive a triac like MAC12D

2007-03-25 13:06:37 · 2 answers · asked by paul 2

2007-03-25 12:20:41 · 5 answers · asked by Anonymous

2007-03-25 11:35:32 · 3 answers · asked by killer queen 5

2007-03-25 11:01:03 · 6 answers · asked by carboy_carlover 1

What are the parts of a battery?
What happens when you connect a wire to the battery terminals?
Where and Why would you connect a load to a battery?
With the battery you made, what are the functions of the battery parts?
What are the chemical reactions that are associated with the batteries you made?
What is potential difference and how is it measured?
What are good conductors of electricity?
Which metals create the most voltage?
Describe the first battery (voltaic). How was it made?
Was there an electrical current in your voltaic pile? How was it measured?
Name the two types of forces that can result from electric charges
You bring two balloons together and they repel. Explain what happens in terms of charges.
How can a negatively charged comb be used to determine the charge of an object?
Why does the television screen attract dust after it has been wiped clean?

2007-03-25 10:57:46 · 4 answers · asked by Olivia S 2

2007-03-25 10:57:37 · 5 answers · asked by Anonymous

I have to convert 120 volts AC to 24 volts DC to power a 1/8 horsepower motor. What will I need to get and where can I buy whatever I need?

2007-03-25 09:50:19 · 8 answers · asked by steady 1

I Want To Build A Robot... I Have Looked At Lego And A Couple Of Other Things But They Don't Have What I'm Looking For. I Need A Circuit Board And A Lot Of Other Stuff. I.E. Sensors, Motors, Camera, Battery, Bluetooth Communications... Etc. So If Any One Can Tell Me Where i Can Get This Stuff From, Please Do

2007-03-25 09:01:04 · 7 answers · asked by bocaj812 2

i have a dc electric motor and it seems that to calculate the power, horse power, and current you need to know the efficency and to get the efficency you need to know the horse power (is there another way to do this)

2007-03-25 08:48:41 · 5 answers · asked by macgyver 1

that have a lever you push up and down mechanically across a train track? I'm having trouble looking it up becasue I don;t know what it is called.

2007-03-25 08:39:11 · 3 answers · asked by Anonymous

The radius of the hemisphere is 5ft, the curved portion of the hemisphere is on the ground so that it opens upward. How much work is required to pump water out of the top of the tank. Weight of water is 62.5lb/ft^3.

2007-03-25 08:32:18 · 3 answers · asked by sprintdawg007 3

2007-03-25 08:31:03 · 2 answers · asked by Max Power 1

I need one for my science project.

2007-03-25 08:29:06 · 2 answers · asked by Anonymous

I know glass can be infused with metals to make stained (colored) glass. Why can't a similar process be done to solar cells?

2007-03-25 08:10:36 · 4 answers · asked by speedydasher47 2

have you heard about this term can you tell more about this

2007-03-25 07:55:23 · 2 answers · asked by warren v 1

i have problem regarding the elcb i connect one packaging machine to this elcb and after 6 hrs of running the eclb trip off. the rating of eclb is 40a / 300ma .the machine is euipped with heater and servo motor,is anybody can suggest what might wrong

2007-03-25 07:48:55 · 3 answers · asked by warren v 1

I'm teaching myself some basic electronics just as a hobby. My question is does the neg. lead on both a NPN & PNP transistor always connect to the neg. side of the power supply?
I want to be able to build some basic electronics projects and know more than just where each component goes by looking at the directions. I know the proper way to learn this would be to study up on all different parts but this is purely as a as time allows hobby. Where can I find some information on circuit board design 101. Thanks

2007-03-25 07:08:36 · 2 answers · asked by tpjp19 2

i mean the specific equation for calculating enthalpy, entropy and other properties.not the general equation of state which i already knew but i do not know how to derive them for latter.so please help me for those of you who know them.

2007-03-25 06:47:59 · 3 answers · asked by j.anaike 1